Problem
Identify the expression as a polynomial or not a polynomial. For a polynomial, give the degree and identify it as a monomial, binomial, trinomial, or none of these. \[ 3 x+5 x^{2} \]
Solution
Step 1 ：The given expression \(3x + 5x^2\) is a polynomial. It is of degree 2 and it is a binomial.
